论20世纪中国艺术家散文     

王兆胜 《广播电视大学学报》2002,6(1):7-10

艺术家散文尽管与作家散文、学者散文和报人散文等样式有不可分割的联系，但它仍然有其自身的独特特征，这主要表现在三个方面：一是取法于自然，而后反观世俗人生；二是更具有个性风采和自由精神；三是注重性灵和感悟的表达方法。作者还对20世纪艺术家散文的局限性提出自己的思考。  相似文献   

芒果基因组DNA的提取方法比较   总被引：3，自引：0，他引：3       下载免费PDF全文

段中岗  庄海波  张嘉铭 《惠州学院学报》2006,26(3):15-17

采用SDS法、改良SDS法、CTAB法、改良CTAB法提取芒果基因组DNA,并对提取的DNA进行质量比较。结果表明:改良CTAB法能较好地去除芒果叶片中的酚类和多糖杂质,提取的DNA母液浓度达767．2 ng/μl, OD260／OD280为1．89,DNA纯度和浓度在四种方法中均为最高。  相似文献   

一类Henstock可积而非Lebesgue可积的函数     

王璞杰 《天津工程师范学院学报》2001,11(4):8-10

通过讨论(L)积分、(IR)积分及(H)积分三者的关系,给出一类(H)可积而非(L)可积的函数.  相似文献   

20世纪末中国散文繁荣探源     

贺玉庆 《怀化学院学报》2002,21(6):63-64

从创作环境、创作主体、传播媒介、读者群体四个方面探讨了 2 0世纪末散文创作繁荣的缘由。  相似文献   

Effects of light and temperature conditions on flowering in Mat Rush     

沈伟其  张国平  奚利峰  桂文光 《浙江大学学报(A卷英文版)》2002,3(5):611-616

The effects of photoperiod and light intensity on flowering in Mat Rush cv. Gangshan 3 were studied. The results showed that treatments with longer day length stimulated flowering significantly and increased stem flowering percentage (SFP). Plants treated with low light intensity at early stage had substantially reduced florets per cyme, SFP, tillers per plant and stem length. At middle and late stage, low light intensity significantly reduced SFP. The principal climatic factors affecting SFP were as follows: mean temperatures (MT) of the third ten-day period (TDP) in December and of the second TDP in February, actual sunlight hours (SH) of the third TDP in February and precipitation of the third TDP in March. A nonlinear simulation model for SFP was established with experimental results and corresponding climatic data (see Eq. (2)). Simulation by the above equation yielded values the same as those observed from 1992 to 2000, indicating its accuracy in describing the relationship between flowering and light and temperature conditions. The interaction between vernalization and SH is also discussed in this paper. Project (No. 981105) supported by the Ningbo City Science Foundation, China  相似文献   

二语写作中母语负迁移对句法层面的影响及对策     

胡彩霞 《海外英语》2011,(9):333-334,344

二语写作中母语负迁移的影响客观存在而且涉及到写作的各个环节。句子作为表达独立完整观点、构建段落篇章的基本单位起着至关重要的作用。因此,分析和探究母语负迁移对句法造成的影响有利于写作教学的有效开展。  相似文献   

Improving Writing Skills of Thai EFL Students by Recognition of and Compensation for Factors of L 1 to L2 Negative Transfer     

William J. Sersen 《美中教育评论》2011,(3):339-345

In this study, we examined the likelihood of a TAME （extended technology acceptance model）, in which the interrelationships among computer self-efficacy, perceived usefulness, intention to use and self-reported use of computer-mediated technology were tested. In addition, the gender- and age-invariant of its causal structure were evaluated. The data were collected from a self-reported questionnaire administered to 477 administrative staff of a public university in Malaysia. The results of structural equation modeling supported the adequacy of TAME. Although the TAME＇s causal structure was applicable to both male and female staff, age group appeared to moderate the structural relationships among the constructs of interest.  相似文献   

20世纪社会主义运动的突出特征     

齐武群 《周口师范学院学报》2003,20(4):62-66

社会主义的现实运动构成了20世纪社会历史画卷的主页，并在其矛盾运动进程中呈现出如下特点：理论与实践的历史错位是20世纪社会主义运动发端的主要特点；20世纪社会主义运动是曲折性与前进性、单一性与多样性的矛盾统一；在理论的创新性与教条化的矛盾撞击中不断发展。  相似文献   

木防己多糖的组成及其清除活性氧自由基的作用     

杨海东  陈艳梅  刘淑芬  甄攀 《河北北方学院学报(医学版)》2005,22(2):6-8

目的:提取并纯化木防己多糖(AFMP),确定其组成,研究其清除活性氧自由基的作用.方法:利用水提醇沉得到木防己粗多糖,再经DEAE纤维素和聚酰胺纯制.利用Fenton反应研究AFMP清除·OH的作用;利用邻苯三酚自氧化法研究AFMP清除·O2-的作用.结果:纸色谱显示AFMP由葡萄糖和半乳糖组成.AFMP清除·OH的能力较弱;清除·O2-时的效果稍强,IC50为1407.4μg/ml.结论:木防己多糖为首次提取制得,有一定的清除羟自由基和超氧阴离子自由基的作用.  相似文献   

兰州百合的核型分析   总被引：1，自引：0，他引：1  

李雪  朱彦荣  幸亨泰 《甘肃高师学报》2007,12(2):43-44

报道了兰州百合的染色体核型,其核型公式为2n=2X=24=2m(2SAT) 2sm 6st 14t,属于3A型,核型不对称性系数(As.K%)为81.37%。其中第一对染色体的短臂上具有居间随体。  相似文献